As much as we all want to see Spiderman with The Avengers, it all comes down to one thing with the movie companies and that is MONEY...

I just look at the rights to the old 1966 Batman series never being released to blu ray or dvd. Fox produced the show, and Warner Bros owns the character, and here it is 40+ years later and there is no Batman 66 on blu ray or dvd.

(Of course, This is just one of many reasons Batman 66 hasn't been released, but I a sure money is the key factor in all of this)